Snack food



FIG. 1 is a perspective view of snack food embodying our new design;

FIG. 2 is a front elevational view thereof, the undisclosed rear being a mirror image;

FIG. 3 is a top view thereof, the bottom view being identical; and,

FIG. 4 is a left side view thereof, the right side view being identical. 

The ornamental design for snack food, as shown and described. 